Media Queries & Viewport

Just look at the number of Mobile phones and tablets sold recently, and the number of ordinary people (not just geeks) who have a mobile device and a tablet in addition to their desktop computer, or have even dispensed with the desktop computer altogether.

It would be foolish of us to just design for desktop, or just for mobile. What we need is a way to optimize our layouts for a multitude of different screen sizes and other factors!
In this talk Chris Mills looks at media queries and viewport in detail: